周书阴符 zhōushūyīnfú Zhou Shu Yinfu Origin Definitions Defs Strokes Stroke Words Sentences Sents 周书 周書 zhōushū Book of Zhou The collective name for the thirty-two chapters of the 尚书 shàngshū covering the Zhou dynasty.阴符 陰符 yīnfú secret military strategies secret military orders or hidden strategy, often paired with the concept of overt military principles